i tested this trainer. it works as described. if you look at when you purchase or build things, certain items have maintenance fees, etc. such that they cost money to maintain! if you create zillions of things that require maintenance, then your expenditures will increase!

my only solution to you is to use the money option to give yourself money.

I think it's broken because I didn't do anything of that sort, I simply build a few research centers and the military maintenance was increased by billions of USD over the night. My inflation was still at 6%, my money supply was 140 billion, and I had built no military units in that scenario. I even got rid of every unit I had after the costs spiked, to no use.

And I dislike using the money feature due to the fact that it causes massive inflation/gdp increase (at least, that's what happened when I used it a while back)